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20 mil RO4003C PCB
20 mil RO4003C PCB

Kappa 438 Rogers PCB 20mil 0.508mm: Electrical Performance

  • October 11. 2023

Kappa 438 Rogers PCB 20mil 0.508mm: Electrical Performance of the Kappa 438 PCB at High Frequencies

In the ever-evolving world of electronics, staying ahead of the curve is crucial. That's why we're excited to introduce the 20mil Kappa 438 PCB, its remarkable properties and cutting-edge features, this PCB is set to revolutionize the industry. Let's delve into the details and explore why the Kappa 438 PCB is a force to be reckoned with.

Material Composition:

The Kappa 438 PCB is constructed using Glass Reinforced Hydrocarbon Ceramic Composites. This advanced material offers a unique combination of strength, durability, and electrical performance. It provides a solid foundation for high-quality circuitry in a variety of applications.

Features and Benefits:

Glass Reinforced Hydrocarbon Thermoset Platform: The Kappa 438 PCB offers ease of manufacturing and assembly, aligning seamlessly with FR-4 standards. This makes it a convenient choice for transitioning to improved electrical performance when needed.

Dk Tailored to FR-4 Industry Standard Norms: With a Dk of 4.38, this PCB facilitates a smooth transition from FR-4, ensuring compatibility while enhancing electrical performance.

Tighter Dk and Thickness Tolerance: The Kappa 438 PCB provides consistent circuit performance thanks to its tighter Dk and thickness tolerance compared to FR-4. This consistency translates into reliable and predictable results.

Low Z Axis CTE and High Tg: Designed with a low Z Axis CTE and high glass transition temperature (Tg), this PCB offers improved design flexibility, enhanced PTH reliability, and compatibility with automated assembly processes.

Flame Retardant Laminate: The Kappa 438 PCB is built with a flame-retardant laminate that meets the UL 94 V-0 standard, ensuring safety and peace of mind.

Kappa 438 PCB 20mil

Dielectric Constant (Dk):

The Dielectric Constant (Dk) of the Kappa 438 PCB is 4.38 at 2.5 GHz. This value is tailored to meet industry-standard norms, making it compatible with existing FR-4 designs. With this Dk, upgrading to improved electrical performance is seamless, ensuring a smooth transition without compromising compatibility.

Dissipation Factor:

The Dissipation Factor of the Kappa 438 PCB is 0.005 at 10 GHz/23°C. This low dissipation factor indicates minimal energy loss during signal transmission, enabling efficient and reliable performance even at high frequencies. It ensures that your circuits maintain optimal signal integrity and minimize distortion.

Thermal Coefficient of Dk:

The Kappa 438 PCB exhibits a Thermal Coefficient of Dk of -21 ppm/°C during a wide temperature range from -50°C to 150°C. This property ensures the stability of the dielectric constant under varying temperature conditions. It allows for consistent electrical performance, making the PCB suitable for applications that experience temperature fluctuations.

Operating Temperature Range:

The Kappa 438 PCB is designed to operate between -40℃ and +85℃. This wide temperature range makes it well-suited for diverse environments and applications. Whether you're working in extreme cold or hot conditions, the Kappa 438 PCB remains reliable and performs consistently.

Frequency Stability:

The Kappa 438 PCB 20mil maintains its electrical performance and stability across a wide frequency range. While the specific frequency range may vary depending on the design and application, the PCB is engineered to deliver consistent performance in high-frequency applications. This stability ensures reliable operation and accurate signal processing.

Controlled Impedance Routing:

The Kappa 438 PCB supports controlled impedance routing, enabling precise trace widths and spacing for impedance matching. This feature is crucial in high-frequency circuits to ensure proper signal propagation and minimize signal reflections. Controlled impedance routing helps maintain signal integrity and reduces the potential for signal degradation.

Crosstalk Reduction:

Crosstalk refers to the unwanted coupling of signals between adjacent traces on a PCB. The Kappa 438 substrate PCB is designed to minimize crosstalk, even at high frequencies. By carefully controlling the trace spacing, utilizing proper ground planes, and employing signal isolation techniques, the PCB helps reduce the interference between signals, ensuring clean and reliable data transmission.

High-Frequency Testing and Validation:

To ensure the high-frequency performance of the Kappa 438 material PCB, rigorous testing and validation processes are carried out. This includes impedance testing, insertion loss testing, and signal integrity analysis. These tests verify the PCB's performance at high frequencies and validate its suitability for demanding applications.

Unveiling the Construction Details:

The Kappa 438 PCB boasts a 2-layer rigid design, meticulously engineered to meet your specific requirements. The construction details are as follows:

Board Dimensions: With a size of 185.33mm x 170.15mm, the Kappa 438 PCB offers ample space for your intricate designs, accommodating up to 20PCS with a tolerance of +/- 0.15mm.

Minimum Trace/Space: The Kappa 438 PCB supports precise routing, with a minimum trace/space of 7/7 mils, enabling you to create intricate circuitry with ease.

Minimum Hole Size: This PCB supports various component and via sizes, with a minimum hole size of 0.50mm, ensuring compatibility with a wide range of components.

Finished Board Thickness and Copper Weight: The Kappa 438 PCB has a finished board thickness of 0.6mm, striking a balance between compactness and robustness. The outer layers have a copper weight of 1 oz (1.4 mils), ensuring efficient conductivity.

Surface Finish and Silkscreen: The Kappa 438 PCB 0.508mm is finished with immersion gold, providing excellent solderability. It does not include top or bottom silkscreen or solder mask, offering a clean and minimalist aesthetic.

Rigorous Testing: To guarantee the highest quality, each Kappa 438 PCB undergoes a 100% electrical test before shipment, ensuring optimal performance and reliability.

Stackup and Layer Configuration:

The Kappa 438 PCB features a 2-layer rigid construction. The stackup consists of a copper layer on the top and bottom, with a Rogers Core Kappa 438 in the middle. The thickness of the Rogers Core is 0.508 mm (20mil), providing a robust substrate for your circuitry.

Component Statistics:

The Kappa 438 Rogers PCB can accommodate up to 34 components, with a total of 88 pads. It includes 56 thru-hole pads and 32 top surface mount technology (SMT) pads. With 61 vias and 5 nets, you have ample flexibility to design complex and interconnected circuits.

Accepted Standard:

The Kappa 438 PCB adheres to the IPC-Class-2 standard, ensuring high-quality manufacturing and reliable performance. This standard sets guidelines for the design, fabrication, and assembly of printed circuit boards, guaranteeing consistency and reliability.


The Kappa 438 PCB is available worldwide, allowing engineers and designers from various regions to benefit from its exceptional properties and features. Regardless of your location, you can leverage the advantages of this advanced PCB technology.

The Kappa 438 PCB opens doors to a wide range of applications. Some typical examples include:

Carrier Grade WiFi/Licensed Assisted Access (LAA): Experience enhanced connectivity and performance in wireless communication systems.

Small Cell and Distributed Antenna Systems (DAS): Enable seamless and efficient communication in densely populated areas.

Vehicle to Vehicle/Vehicle to Infrastructure Communications (V2X): Embrace the future of smart transportation with reliable and high-speed communication.

Internet of Things (IoT) Segments: Empower smart homes and wireless meters with secure and robust connectivity.

The Kappa 438 PCB represents a significant leap forward in electrical performance and reliability. Its tailored Dk, stability across temperature ranges, and compatibility with existing design standards make it a versatile and powerful solution for a wide range of applications. Whether you're working on wireless communication systems, smart infrastructure, or IoT devices, the Kappa 438 PCB empowers you to push the boundaries of what's possible in the world of electronics.

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IPv6 network supported

IPv6 network supported


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